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1. Adaptive Spectral Model for abnormality detection based on physiological status monitoring of dairy cows

Author:
Jelena Muncan; Mari Miyazaki; Shinichiro Kuroki; Kentarou Ikuta; Roumiana Tsenkova
Source:
Talanta 2023 v.253 pp. 123893
ISSN:
0039-9140
Subject:
algorithms; cows; milk; models; physiological state; spectral analysis; time series analysis; wavelengths
Abstract:
... This research study developed milk spectral data-driven approach, called Adaptive Spectral Model for Abnormality Detection - ASMAD, for detection of physiological abnormalities of individual dairy cows. The algorithm is based on the logic that milk spectra of each individual cow is highly animal-specific, which means it could be used as a respective individual marker for identification. When the a ...
DOI:
10.1016/j.talanta.2022.123893

2. Application of near-infrared hyperspectral imaging coupled with chemometrics for rapid and non-destructive prediction of protein content in single chickpea seed

Author:
Dhritiman Saha; T. Senthilkumar; Sonu Sharma; Chandra B. Singh; Annamalai Manickavasagan
Source:
Journal of food composition and analysis 2023 v.115 pp. 104938
ISSN:
0889-1575
Subject:
chemometrics; chickpeas; food composition; least squares; models; prediction; protein content; reflectance; spectral analysis; support vector machines; wavelengths
Abstract:
... Evaluating the protein content of a single chickpea seed in a rapid, non-destructive, and precise manner is crucial for facilitating the breeding of high-protein chickpeas. This study explored the potential of near-infrared (NIR) hyperspectral imaging (HSI) to predict the protein content in a single chickpea seed. Eight varieties of chickpeas with different protein contents were subjected to NIR r ...
DOI:
10.1016/j.jfca.2022.104938

3. Cerium/polyacrylic acid modified porphyrin metal-organic framework as fluorescence and photothermal sensor for ascorbic acid measurement

Author:
Min Li; Shangqing Zhang; Haiyan Li; Mingli Chen
Source:
Talanta 2023 v.252 pp. 123825
ISSN:
0039-9140
Subject:
ascorbic acid; blood serum; cerium; coordination polymers; fluorescence; humans; polyacrylic acid; porphyrins; rapid methods; spectral analysis; temperature
Abstract:
... A fluorescence and photothermal dual-signal assay was developed for the determination of ascorbic acid (AA). Cerium/polyacrylic acid modified porphyrin metal-organic frameworks (PCN-224@PAA-Ce MOFs) exhibit oxidase-like activity and can effectively oxidize 3,3 ′, 5,5 ′-tetramethylbenzidine (TMB) from colorless substrates to blue substrates (oxTMB). The absorption spectrum of oxTMB overlaps with th ...
DOI:
10.1016/j.talanta.2022.123825

4. Composite films with properties improved by increasing the compatibility of sodium caseinate and zein in a heated 60% ethanol solvent

Author:
Shumin Wang; Han Chen; Yi Tong; Yi Li; Jijun Zhang; Chong Chen; Fazheng Ren; Caiyun Hou; Pengjie Wang
Source:
Food hydrocolloids 2023 v.134 pp. 108017
ISSN:
0268-005X
Subject:
atomic force microscopy; contact angle; ethanol; glass transition temperature; hydrocolloids; microstructure; permeability; sodium caseinate; solvents; spectral analysis; tensile strength; thermal stability; water vapor; zein
Abstract:
... To improve the mechanical and barrier properties of zein films, sodium caseinate (CN) was combined with zein to fabricate composite films, by achieving co-dispersion of the two proteins in a newly developed film-forming solvent mixture (60% v/v aqueous ethanol, at 65 °C). The synergistic interactions between CN and zein at various ratios in the films were evaluated. Incorporation of CN into zein-b ...
DOI:
10.1016/j.foodhyd.2022.108017

5. Dithiothreitol-induced reassembly of soybean lipophilic protein as a carrier for resveratrol: Preparation, structural characterization, and functional properties

Author:
Mingming Zhong; Yufan Sun; Hanyu Song; Yi Liao; Baokun Qi; Yang Li
Source:
Food chemistry 2023 v.399 pp. 133964
ISSN:
0308-8146
Subject:
bioavailability; digestion; disulfide bonds; dithiothreitol; encapsulation; food chemistry; lipophilicity; methylcellulose; pH; polyacrylamide gel electrophoresis; resveratrol; solubility; soybeans; spectral analysis; temperature
Abstract:
... We employed dithiothreitol (DTT) to reassemble soy lipophilic protein (LP) and increased its solubility for encapsulating resveratrol (Res); we subsequently added hydroxypropyl methylcellulose (HPMC) to further stabilize Res. Physicochemical characterization, sodium dodecyl sulfate–polyacrylamide gel electrophoresis, and spectral analysis revealed that DTT triggered the breakage and reassembly of ...
DOI:
10.1016/j.foodchem.2022.133964

6. Efficient photocatalysis of tetracycline hydrochloride (TC-HCl) from pharmaceutical wastewater using AgCl/ZnO/g-C3N4 composite under visible light: Process and mechanisms

Author:
Chenman Ding; Qiurong Zhu; Bei Yang; Evangelos Petropoulos; Lihong Xue; Yanfang Feng; Shiying He; Linzhang Yang
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 249-262
ISSN:
1001-0742
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; chemical oxygen demand; electric current; hydrogen peroxide; industrial wastewater; irradiation; light; liquids; photocatalysis; photocatalysts; spectral analysis; spectrometers; superoxide anion; tetracycline; total organic carbon; China
Abstract:
... AgCl/ZnO/g-C₃N₄, a visible light activated ternary composite catalyst, was prepared by combining calcination, hydrothermal reaction and in-situ deposition processes to treat/photocatalyse tetracycline hydrochloride (TC-HCl) from pharmaceutical wastewater under visible light. The morphological, structural, electrical, and optical features of the novel photocatalyst were characterized using scanning ...
DOI:
10.1016/j.jes.2022.02.032

7. Evaluation of artificial neural network performance for classification of potato plants infected with potato virus Y using spectral data on multiple varieties and genotypes

Author:
Whitworth Jonathan L.; L.M. Griffel; D. Delparte; J. Whitworth; P. Bodily; D. Hartley
Source:
Smart agricultural technology 2023 v.3 pp. 100101
ISSN:
2772-3755
Subject:
Potato virus Y; data collection; greenhouses; industry; insecticides; model validation; neural networks; pathogens; potatoes; seed certification; seed tubers; spectral analysis; stakeholders; statistical analysis; viruses
Abstract:
... Potato virus Y (Potyviridae, PVY) is a plant virus that poses a significant threat to potato producers on a global basis. The pathogen has disrupted seed potato supplies and negatively impacted yield and quality of commercial potato crops. The potato industry currently manages PVY infection levels via insecticide applications, regional seed certification programs that rely on field scouting to vis ...
Handle:
10113/7875860
DOI:
10.1016/j.atech.2022.100101

8. Fast Bayesian inference on spectral analysis of multivariate stationary time series

Author:
Zhixiong Hu; Raquel Prado
Source:
Computational statistics & data analysis 2023 v.178 pp. 107596
ISSN:
0167-9473
Subject:
Bayesian theory; data collection; electroencephalography; models; spectral analysis; time series analysis; wind speed; California
Abstract:
... Spectral analysis discovers trends, periodic and other characteristics of a time series by representing these features in the frequency domain. However, when multivariate time series are considered, and the number of components increases, the size of the spectral density matrix grows quadratically, making estimation and inference rather challenging. The proposed novel Bayesian framework considers ...
DOI:
10.1016/j.csda.2022.107596

9. Formation of organic chloride in the treatment of textile dyeing sludge by Fenton system

Author:
Xiaojun Lai; Xun-an Ning; Yang Li; Nuoyi Huang; Yaping Zhang; Chenghai Yang
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 376-387
ISSN:
1001-0742
Subject:
acidity; chlorides; chlorine; desorption; fabrics; hydrophobicity; liquids; mineralization; organic carbon; oxidation; phenanthrenes; sludge; spectral analysis; superoxide anion; China
Abstract:
... In the oxidation treatment of textile dyeing sludge, the quantitative and transformation laws of organic chlorine are not clear enough. Thus, this study mainly evaluated the treatment of textile dyeing sludge by Fenton and Fenton-like system from the aspects of the influence of Cl⁻, the removal of polycyclic aromatic hydrocarbons (PAHs) and organic carbon, and the removal and formation mechanism o ...
DOI:
10.1016/j.jes.2021.11.024

10. From lab to factory: A calibration transfer strategy from HSI to online NIR optimized for quality control of green tea fixation

Author:
Yujie Wang; Zhengyu Ren; Maoyu Li; Chengye Lu; Wei-Wei Deng; Zhengzhu Zhang; Jingming Ning
Source:
Journal of food engineering 2023 v.339 pp. 111284
ISSN:
0260-8774
Subject:
beverage industry; calibration; green tea; least squares; models; prediction; quality control; rapid methods; spectral analysis; spectroscopy; water content
Abstract:
... Fixation is the key step of green tea processing, usually with moisture content as the quality evaluation indicator. Near-infrared (NIR) spectroscopy has been widely used in tea moisture detection but is mostly realized in the laboratory, and online detection in tea processing is limited. This study explores the possibility of calibration transfer from lab-based hyperspectral imaging (HSI) to onli ...
DOI:
10.1016/j.jfoodeng.2022.111284

11. Gadolinium (III) doped carbon dots as dual-mode sensor for the recognition of dopamine hydrochloride and glutamate enantiomers with logic gate operation

Author:
Shanshan Wei; Baoqiang Liu; Xinyuan Shi; Shufeng Cui; Hongyuan Zhang; Pengju Lu; Hui Guo; Bin Wang; Guoying Sun; Chunhuan Jiang
Source:
Talanta 2023 v.252 pp. 123865
ISSN:
0039-9140
Subject:
blood serum; carbon; central nervous system; colorimetry; detection limit; disease diagnosis; dopamine; enantiomers; fluorescence; gadolinium; glutamic acid; humans; mice; neurotransmitters; sensors (equipment); spectral analysis; ultraviolet-visible spectroscopy; urine
Abstract:
... Dopamine hydrochloride (DH) and D-Glutamic acid (D-Glu) are important excitatory neurotransmitters, which are closely relative to central nervous system diseases. Therefore, it is critical to develop the sensitive and facile sensor to precisely monitor the changes of these neurotransmitters. Herein, the gadolinium-doped carbon dots (Gd-CDs) were synthesized by a low-cost and effortless one-pot sol ...
DOI:
10.1016/j.talanta.2022.123865

12. Hyperspectral imaging and chemometrics assessment of intramuscular fat in pork Longissimus thoracic et lumborum primal cut

Author:
Christopher T. Kucha; Li Liu; Michael Ngadi; Claude Gariépy
Source:
Food control 2023 v.145 pp. 109379
ISSN:
0956-7135
Subject:
animals; backfat; chemometrics; dissection; food safety; intramuscular fat; longissimus muscle; meat cuts; pork; prediction; psoas muscles; spectral analysis
Abstract:
... To assess the intramuscular fat (IMF) of Longissimus thoracis et lumborum (LTL) primal cut excised from an animal carcass, rib sections are dissected for chemical or subjective evaluation. Dissection destroys the integrity of the LTL. This study examined the feasibility of developing a method based on hyperspectral imaging to predict the IMF of pork LTL using hyperspectral imaging. Spectral inform ...
DOI:
10.1016/j.foodcont.2022.109379

13. Identification of liquors from the same brand based on ultraviolet, near-infrared and fluorescence spectroscopy combined with chemometrics

Author:
Miao He; Xiaolong Chen; Jing Zhang; Jiawei Li; Dong Zhao; Yang Huang; Danqun Huo; Xiaogang Luo; Changjun Hou
Source:
Food chemistry 2023 v.400 pp. 134064
ISSN:
0308-8146
Subject:
automation; chemometrics; discriminant analysis; fluorescence; fluorescence emission spectroscopy; food chemistry; market economy; spectral analysis
Abstract:
... Accurate identification of various liquors from the same brand is of great significance for safeguarding the rights and interests of consumers and the market economy. Here, the spectral properties of liquors were studied based on ultraviolet (UV), near-infrared (NIR) and multi-way fluorescence spectroscopy. Then these liquors were distinguished by integrating their spectral properties with the che ...
DOI:
10.1016/j.foodchem.2022.134064

14. Machine learning for classifying and predicting grape maturity indices using absorbance and fluorescence spectra

Author:
Claire E.J. Armstrong; Adam M. Gilmore; Paul K. Boss; Vinay Pagay; David W. Jeffery
Source:
Food chemistry 2023 v.403 pp. 134321
ISSN:
0308-8146
Subject:
absorbance; color; discriminant analysis; fluorescence; food chemistry; grapes; malic acid; models; pH; prediction; rapid methods; spectral analysis; spectroscopy; tartaric acid; viticulture
Abstract:
... Absorbance-transmission and fluorescence excitation-emission matrix (A-TEEM) spectroscopy was investigated as a rapid method for predicting maturity indices using Cabernet Sauvignon grapes produced under four viticulture treatments during two growing seasons. Machine learning models were developed with fused spectral data to predict 3-isobutyl-2-methoxypyrazine (IBMP), pH, total tannins (Tannin), ...
DOI:
10.1016/j.foodchem.2022.134321

15. Optimization of vortex-assisted switchable hydrophilicity solvent liquid phase microextraction for the selective extraction of vanillin in different matrices prior to spectrophotometric analysis

Author:
Adil Elik; Nail Altunay
Source:
Food chemistry 2023 v.399 pp. 133929
ISSN:
0308-8146
Subject:
detection limit; food chemistry; hydrophilicity; liquid-phase microextraction; pH; response surface methodology; separation; solvents; spectral analysis; vanillin
Abstract:
... The main purpose of this research article is to develop a vortex-assisted switchable hydrophilicity solvent liquid phase microextraction (VA-SHS-LPME) for the selective and efficient extraction of trace vanillin in food samples. Four switchable hydrophilicity solvents (SHSs) were prepared and tested for the extraction of vanillin. The obtained extract phase after phase separation was analyzed by U ...
DOI:
10.1016/j.foodchem.2022.133929

16. Photo-induced surface frustrated Lewis pairs for promoted photocatalytic decomposition of perfluorooctanoic acid

Author:
Xianjun Tan; Zhenying Jiang; Yuxiong Huang
Source:
Frontiers of environmental science & engineering 2023 v.17 no.1 pp. 3
ISSN:
2095-2201
Subject:
bismuth; irradiation; oxidation; oxygen; perfluorooctanoic acid; photocatalysis; photocatalysts; reaction kinetics; spectral analysis; ultraviolet radiation
Abstract:
... Heterogeneous photocatalysis has gained substantial research interest in treating per- and polyfluoroalkyl substances (PFAS)-contaminated water. However, sluggish degradation kinetics and low defluorination efficiency compromise their practical applications. Here, we report a superior photocatalyst, defected Bi₃O(OH)(PO₄)₂, which could effectively degrade typical PFAS, perfluorooctanoic acid (PFOA ...
DOI:
10.1007/s11783-023-1603-6

17. Rapid identification of salmonella serovars by using Raman spectroscopy and machine learning algorithm

Author:
Jiazheng Sun; Xuefang Xu; Songsong Feng; Hanyu Zhang; Lingfeng Xu; Hong Jiang; Baibing Sun; Yuyan Meng; Weizhou Chen
Source:
Talanta 2023 v.253 pp. 123807
ISSN:
0039-9140
Subject:
Raman spectroscopy; Salmonella; algorithms; foodborne illness; humans; model validation; neural networks; public health; salmonellosis; serotypes; spectral analysis; wavelengths
Abstract:
... A widespread and escalating public health problem worldwide is foodborne illness, and foodborne Salmonella infection is one of the most common causes of human illness.For the three most pathogenic Salmonella serotypes, Raman spectroscopy was employed to acquire spectral data.As machine learning offers high efficiency and accuracy, we have chosen the convolutional neural network(CNN), which is suit ...
DOI:
10.1016/j.talanta.2022.123807

18. The microbial synergy and response mechanisms of hydrolysis-acidification combined microbial electrolysis cell system with stainless-steel cathode for textile-dyeing wastewater treatment

Author:
Jiawei Xie; Xinyi Zou; Yaofeng Chang; Junxiang Xie; He Liu; Min-hua Cui; Tian C. Zhang; Chongjun Chen
Source:
Science of the total environment 2023 v.855 pp. 158912
ISSN:
0048-9697
Subject:
biodegradability; carbon; cathodes; cost effectiveness; electric potential difference; electrical treatment; environment; microbial electrolysis cells; phylogeny; spectral analysis; stainless steel; wastewater; wastewater treatment
Abstract:
... Microbial electrolysis cell (MEC) has been existing problems such as poor applicability to real wastewater and lack of cost-effective electrode materials in the practical application of refractory wastewater. A hydrolysis-acidification combined MEC system (HAR-MECs) with four inexpensive stainless-steel and conventional carbon cloth cathodes for the treatment of real textile-dyeing wastewater, whi ...
DOI:
10.1016/j.scitotenv.2022.158912

19. A smartphone readout device for portable and sensitive estimation of Hg2+ via coumarin-modified paper

Author:
Xueyan Liu; Rongsheng Gao; Lu Han; Chengyou Kan; Jianhong Xu
Source:
Talanta 2023 v.252 pp. 123849
ISSN:
0039-9140
Subject:
color; cost effectiveness; detection limit; fluorescence; mobile telephones; paper; spectral analysis
Abstract:
... The development of cost-effective sensing system for Hg²⁺ quantitation is highly demanded for environmental monitoring. In this work, we reported an on-site, rapid and portable smartphone-based Hg²⁺ sensing system integrating coumarin-modified paper as a probe and smartphone readout device as a processing platform. For fluorescent sensing of Hg²⁺, the modified paper was fabricated by chemically gr ...
DOI:
10.1016/j.talanta.2022.123849

20. (±) Erysectin A, a new isoprenylated isoflavone with a rare acetonyl group from Erythrina secundiflora Hassk

Author:
Ruilong Luo; Fengqiu Li; Hongdan Zhuang; Liqin Wang
Source:
Natural product research 2022 v.36 no.19 pp. 4886-4891
ISSN:
1478-6427
Subject:
Erythrina; chalcone; cytotoxicity; flavanones; flavones; isoflavones; neoplasm cells; research; spectral analysis
Abstract:
... (±) Erysectin A (1), a new isoprenylated isoflavone with a rare acetonyl group, along with 15 known compounds including eight isoprenylated isoflavones (2–9), two isoprenylated flavanones (10–11), three flavanones (12–14), a flavone (15), and a chalcone (16), was isolated from the twigs and leaves of Erythrina secundiflora Hassk. Their structures were identified based on their 1 D and 2 D NMR spec ...
DOI:
10.1080/14786419.2021.1908280

21. (±)-Involucrasins A and B, two pairs of flavanone enantiomers from Shuteria involucrata and their inhibitory effects on the proliferation of various cancer cell lines

Author:
Lu Liu; Xiao-Hong Li; Xiao-Xia Ma; Wen-Hong Tan; Wen-Zhe Ma; Yun-Fu Shen; Afsar Khan; Zhi-Hong Zhou; Zhu-Ya Yang
Source:
Journal of Asian natural products research 2022 v.24 no.7 pp. 641-647
ISSN:
1477-2213
Subject:
Shuteria; enantiomers; flavanones; human cell lines; neoplasm cells; research; spectral analysis
Abstract:
... (±)-Involucrasins A (1) and B (2), two pairs of flavanone enantiomers were isolated from Shuteria involucrata. Structurally, both 1 and 2 are rare representatives of 5-dehydroxy/5-demethoxy 2’,3’,4’-trisubstituted flavanones. Their structures were elucidated on the basis of comprehensive spectroscopic data analysis and comparison with the literature data. Involucrasin B (2) exhibited moderate anti ...
DOI:
10.1080/10286020.2021.1952187

22. 13,13a-seco-protoberberines from the tubers of Corydalis yanhusuo and their anti-inflammatory activity

Author:
Gui-Yang Xia; Dong-Jie Fang; Ling-Yan Wang; Huan Xia; Ya-Nan Wang; Hong-Cai Shang; Sheng Lin
Source:
Phytochemistry 2022 v.194 pp. 113023
ISSN:
0031-9422
Subject:
Corydalis yanhusuo; Western blotting; active sites; anti-inflammatory activity; bioassays; enantiomers; inducible nitric oxide synthase; interleukin-6; lipopolysaccharides; molecular dynamics; nitric oxide; plant biochemistry; skeleton; spectral analysis; transcription factor NF-kappa B
Abstract:
... Six undescribed protoberberine derivatives including two pairs of enantiomers, named yanhusanines G-L, along with fifteen reported protoberberine alkaloids, were isolated from the tubers of Corydalis yanhusuo. Among them, yanhusanines H-L feature a unique 13,13a-seco skeleton which is rare in nature. Their structural elucidations were achieved by extensive spectroscopic analysis and quantum chemis ...
DOI:
10.1016/j.phytochem.2021.113023

23. 13-Epi-9-Deacetylxenicin Derivatives from a Taiwanese Soft Coral Asterospicularia laurae and Treir Cytotoxic Activity

Author:
Zheng-Yu Lin; Kun-Ching Cheng; Huey-Jen Su; Chi-I Chang; Jue-Liang Hsu; Min-fen Hsu; Mei-Chin Lu; Yun-Sheng Lin
Source:
Chemistry of natural compounds 2022 v.58 no.4 pp. 659-668
ISSN:
0009-3130
Subject:
X-ray diffraction; acylation; corals; cytotoxicity; diterpenoids; humans; mass spectrometry; metabolites; neoplasm cells; spectral analysis
Abstract:
... The xenicane-type diterpene 13-epi-9-deacetylxenicin (1) was isolated from polar extract of the soft coral Asterospicularia laurae. The structure of 13-epi-9-deacetylxenicin was determined by X-ray diffraction analysis, and the absoulte configuration was determined using the modified Mosher′s method. Eleven acylation products of 13-epi-9-deacetylxenicin were prepared: 13-epi-9-O-p-anisoylxenicin ( ...
DOI:
10.1007/s10600-022-03765-z

24. A 1D-SP-Net to Determine Early Drought Stress Status of Tomato (Solanum lycopersicum) with Imbalanced Vis/NIR Spectroscopy Data

Author:
Yuan-Kai Tu; Chin-En Kuo; Shih-Lun Fang; Han-Wei Chen; Ming-Kun Chi; Min-Hwi Yao; Bo-Jein Kuo
Source:
Agriculture (Basel) 2022 v.12 no.2 pp. -
ISSN:
2077-0472
Subject:
Solanum lycopersicum; agriculture; discriminant analysis; drought; near-infrared spectroscopy; neural networks; prediction; spectral analysis; tomatoes; water stress
Abstract:
... Detection of the early stages of stress is crucial in stabilizing crop yields and agricultural production. The aim of this study was to construct a nondestructive and robust method to predict the early physiological drought status of the tomato (Solanum lycopersicum); for this purpose, a convolutional neural network (CNN)-based model with a one-dimensional (1D) kernel for fitting the visible and n ...
DOI:
10.3390/agriculture12020259

25. 1H-NMR-guided isolation of enantiomeric coumarin-monoterpenes with anti-inflammatory activity from Gerbera piloselloides

Author:
Chen-xu Zhao; Ha Gao; Meng Yu; Jian-ping Zhao; Bing-xin He; Jiang-ping Wu; Hai-xin Zhang; Tao Zhang; Zhong-mei Zou
Source:
Phytochemistry 2022 v.203 pp. 113346
ISSN:
0031-9422
Subject:
Gerbera; X-ray diffraction; anti-inflammatory activity; circular dichroism spectroscopy; coumarin; enantiomers; fractionation; monoterpenoids; optical properties; plant biochemistry; spectral analysis
Abstract:
... ¹H-NMR guided fractionation led to the isolation of twenty-two coumarin monoterpenes from the whole plant of Gerbera piloselloides, among which fourteen were undescribed. All coumarin monoterpenes were initially found to be racemates without optical activity. Subsequently, eleven pairs of optically pure enantiomers were successfully separated by chiral phase HPLC. Their structures and absolute con ...
DOI:
10.1016/j.phytochem.2022.113346

26. 2-Oxaspiro[4.5]decane and α-pyrenocine derivatives from the endophytic fungus Roussoella sp. PSU-H51

Author:
Ubonta Sommart; Vatcharin Rukachaisirikul; Saowanit Saithong; Souwalak Phongpaichit; Jariya Sakayaroj; Sita Preedanon; Kittipong Chainok; Teerayut Khunrong
Source:
Natural product research 2022 v.36 no.19 pp. 4911-4920
ISSN:
1478-6427
Subject:
Microsporum gypseum; X-ray diffraction; antifungal properties; breast neoplasms; culture media; cytotoxicity; decane; endophytes; fungi; research; spectral analysis
Abstract:
... One new 2-oxaspiro[4.5]decane, roussoellide, and one new α-pyrenocine, 2',3'-dihydropyrenocine A, together with nine known compounds including known arthropsolide A, and pyrenocines A and E, were obtained from the culture broth of the endophytic fungus Roussoella sp. Their structures were determined using spectroscopic data. The absolute configuration of known arthropsolide A was assigned on the b ...
DOI:
10.1080/14786419.2021.1910692

27. 30-norlanostane triterpenoids and steroid derivatives from the endophytic fungus Aspergillus nidulans

Author:
Qin Li; Yuyi Zheng; Aimin Fu; Mengsha Wei; Xin Kang; Chunmei Chen; Hucheng Zhu; Yonghui Zhang
Source:
Phytochemistry 2022 v.201 pp. 113257
ISSN:
0031-9422
Subject:
Aspergillus nidulans; X-ray diffraction; aldehydes; cytotoxicity; endophytes; fungi; moieties; plant biochemistry; pregnanes; spectral analysis; stereochemistry; triterpenoids
Abstract:
... Two undescribed 30-norlanostane triterpenoids, named nidulanoids A and B, one ergostane-type steroid with an unusual double bond between C-17 and C-20 designated (17E,22E,24R)-3β,5α-dihydroxyergosta-7,17,22-trien-6,16-dione, and one pregnane, (7Z,9Z,17Z)-,2α,3β-dihydroxypregna-7,9,17 (20)-trien-18-al, along with six known steroids were isolated from the extract of the fungus Aspergillus nidulans. ...
DOI:
10.1016/j.phytochem.2022.113257

28. 4-Hydroxybenzoic Acid as an Antiviral Product from Alkaline Autoxidation of Catechinic Acid: A Fact to Be Reviewed

Author:
Silvana Alfei; Debora Caviglia; Susanna Penco; Guendalina Zuccari; Fabio Gosetti
Source:
Plants 2022 v.11 no.14 pp. -
ISSN:
2223-7747
Subject:
4-hydroxybenzoic acid; Human alphaherpesvirus 1; antiviral properties; autoxidation; catechin; spectral analysis; thin layer chromatography
Abstract:
... The dark brown mixture resulting from the autooxidation of catechinic acid (CA) (AOCA) has been reported to possess antiviral activity against Herpes Simplex Virus 1 and 2 (HSV-1 and HSV-2). Unfortunately, the constituents of AOCA were not separated or identified and the compound(s) responsible for AOCA’s antiviral activity remained unknown until recently. Colorless 4-hydroxy benzoic acid (4-HBA) ...
DOI:
10.3390/plants11141822

29. 532-nm Laser-Excited Raman Spectroscopic Evaluation of Iranian Honey

Author:
Andrew Atiogbe Huzortey; Abbas Arefi; Benjamin Anderson; Hossein Khadem; Samuel Sonko Sackey; Elaheh Mahmoodi-Khaledi; Seyed Hassan Tavassoli
Source:
Food analytical methods 2022 v.15 no.3 pp. 772-782
ISSN:
1936-9751
Subject:
activated carbon; cost effectiveness; flora; honey; nectar; spectral analysis; Iran
Abstract:
... Bees depend on the nectar from flora for the production of honey. Different flora produces unique nectar with varying compositions resulting in almost unlimited varieties in honey. In this work, we have used the 532-nm laser-induced Raman spectroscopic technique, for the first time, to study honey varieties from Iran. The Raman spectra of different kinds of commercial honey samples were obtained u ...
DOI:
10.1007/s12161-021-02164-4

30. ARTP mutagenesis promotes selenium accumulation in Saccharomyces boulardii

Author:
Xinling Nie; Yan Xing; Qingfei Li; Feng Gao; Shiyan Wang; Pei Liu; Xiangqian Li; Zhongbiao Tan; Pixiang Wang; Hao Shi
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.168 pp. 113916
ISSN:
0023-6438
Subject:
Saccharomyces cerevisiae var. cerevisiae; ambient temperature; biomass; energy; experimental design; mutagenesis; mutants; nanoparticles; protein content; rapid methods; selenium; sodium selenite; spectral analysis; transmission electron microscopy; yeasts
Abstract:
... Atmospheric and room temperature plasma (ARTP) is a rapid method for strain to obtain desirable mutants. In this study, Saccharomyces boulardii was used for mutagenesis through ARTP mutagenesis and the medium for cultivation was further optimized by Box–Behnken design experiments. The biomass of the optimal mutant MSBV reached 42.8 g/L wet cell weight (WCW), and the total selenium (Se) was 13.96 m ...
DOI:
10.1016/j.lwt.2022.113916

31. Abietane diterpenes from the twigs and leaves of Cephalotaxus oliveri Mast. with antitumor activity

Author:
Chunyu Jiang; Mengyue Yang; Chunxue Zhao; Fangshen Liu; Hangao Yang; Zhanlin Li; Tong Han; Bin Lin; Dahong Li; Huiming Hua
Source:
Phytochemistry 2022 v.199 pp. 113187
ISSN:
0031-9422
Subject:
Cephalotaxus; antineoplastic activity; apoptosis; circular dichroism spectroscopy; cytotoxicity; diterpenoids; humans; neoplasm cells; plant biochemistry; spectral analysis
Abstract:
... Twenty one abietane diterpenes were isolated from Cephalotaxus oliveri Mast. The structures of 7 undescribed diterpenoids, named cephaloliverins A-G, were elucidated via spectroscopic data interpretation and electronic circular dichroism (ECD) analysis. The isolated diterpenoids were evaluated for their cytotoxicity against three kinds of human tumor cell lines (MCF-7, HepG2, and A549). Metaglypti ...
DOI:
10.1016/j.phytochem.2022.113187

32. Abietane diterpenoids from Phlegmariurus carinatus and their biological activities

Author:
Jia-Wei Hu; Qiang Wang; Lin Liu; Yi-Ming Hu; Min Xie; Dong-Kun Zheng; Zhen Xie; Yang Liu
Source:
Phytochemistry 2022 pp. 113457
ISSN:
0031-9422
Subject:
apoptosis; biological assessment; cytotoxicity; diterpenoids; glioblastoma; mitochondria; neuroprotective effect; plant biochemistry; spectral analysis
Abstract:
... Five undescribed abietane diterpenoids, along with eight known analogs, were isolated from Phlegmariurus carinatus. Their structures were unambiguously elucidated by extensive analysis of spectroscopic data and comparison between the literature. The absolute configuration of phlecarinatone C was determined by evaluating ECD spectra. Four undescribed abietane diterpenoids and eight known analogs we ...
DOI:
10.1016/j.phytochem.2022.113457

33. Abiotic stress classification through spectral analysis of enhanced electrophysiological signals of plants

Author:
Kavya Sai; Neetu Sood; Indu Saini
Source:
Biosystems engineering 2022 v.219 pp. 189-204
ISSN:
1537-5110
Subject:
cold; cold stress; discriminant analysis; electrophysiology; physiological state; plant stress; signal strength; soybeans; spectral analysis; uncertainty
Abstract:
... Electrical activity in plants undergoes potential changes in interpreting the plant's physiological state. These electrical signals show arbitrary and probabilistic dynamics in which stress can be detected and analysed in the early stages of symptom appearance in plants. Evaluation of uncertainty in plant signals by signal strength enhancement is stress-specific. In this paper, we considered physi ...
DOI:
10.1016/j.biosystemseng.2022.04.025

34. Accumulation and Pulse Electron Paramagnetic Resonance Spectroscopic Investigation of the 4-Oxidobenzyl Radical Generated in the Radical S-Adenosyl-l-methionine Enzyme HydG

Author:
Guodong Rao; Nanhao Chen; David A. Marchiori; Lee-Ping Wang; R. David Britt
Source:
Biochemistry 2022 v.61 no.2 pp. 107-116
ISSN:
1520-4995
Subject:
S-adenosylmethionine; byproducts; electron paramagnetic resonance spectroscopy; enzymes; ligands; p-cresol; protonation; spectral analysis; tyrosine
Abstract:
... The radical S-adenosyl-l-methionine (SAM) enzyme HydG cleaves tyrosine to generate CO and CN– ligands of the [FeFe] hydrogenase H-cluster, accompanied by the formation of a 4-oxidobenzyl radical (4-OB•), which is the precursor to the HydG p-cresol byproduct. Native HydG only generates a small amount of 4-OB•, limiting detailed electron paramagnetic resonance (EPR) spectral characterization beyond ...
DOI:
10.1021/acs.biochem.1c00619

35. Acetogenins from the stems of Uvaria micrantha showing antiproliferative effects on HepG2 liver cancer cells

Author:
Sanit Thongnest; Jutatip Boonsombat; Siriporn Keeratichamroen; Kriengsak Lirdprapamongkol; Wirongrong Kaweetripob; Surasak Kheawchaum; Chulabhorn Mahidol; Jisnuson Svasti; Somsak Ruchirawat; Hunsa Prawat
Source:
Phytochemistry 2022 v.204 pp. 113450
ISSN:
0031-9422
Subject:
Uvaria; acetogenins; apoptosis; cell cycle checkpoints; hepatoma; human cell lines; humans; neoplasm cells; plant biochemistry; spectral analysis
Abstract:
... Five mono-tetrahydrofuran acetogenins: uvamicranins A–E and three known mono-tetrahydrofuran acetogenins; reticulatacin, calamistrin A, and uvarigrin, were isolated from the stems of Uvaria micrantha (Annonaceae). Their structures were elucidated by 2D NMR and high-resolution mass spectral analysis. The absolute configurations of uvamicranins A and B were determined by modified Mosher's method. Ev ...
DOI:
10.1016/j.phytochem.2022.113450

36. Achieving joint calibration of soil Vis-NIR spectra across instruments, soil types and properties by an attention-based spectra encoding-spectra/property decoding architecture

Author:
Tong Lei; Da-Wen Sun
Source:
Geoderma 2022 v.405 pp. 115449
ISSN:
0016-7061
Subject:
calibration; data collection; models; spectral analysis
Abstract:
... Due to the differences in instruments and measurement methods, soil visible-near infrared (Vis-NIR) spectral data collected worldwide cannot be combined to provide consistent calibration models, reducing the benefit of producing soil spectra libraries. We propose an attention-based spectra encoding-spectra/property decoding model for soil Vis-NIR spectral analysis to solve this problem. By introdu ...
DOI:
10.1016/j.geoderma.2021.115449

37. Action mode of cuminaldehyde against Staphylococcus aureus and its application in sauced beef

Author:
Hui Li; Mao Zhang; Keren Agyekumwaa Addo; Yigang Yu; Xinglong Xiao
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.155 pp. 112924
ISSN:
0023-6438
Subject:
DNA; Staphylococcus aureus; antibacterial properties; beef; cell membranes; food industry; gel electrophoresis; odors; permeability; spectral analysis; taste
Abstract:
... The antibacterial mechanisms of cuminaldehyde (p-Isopropylbenzaldehyde, CUM) against Staphylococcus aureus ATCC 6538 (S. aureus) were investigated from the aspects of membrane damage, and interaction with genomic DNA. The results demonstrated that the MIC of CUM against S. aureus was 0.8 μL/mL. Approximately 6 log CFU/mL of S. aureus could be killed after treatment with MIC of CUM after 8 h. Addit ...
DOI:
10.1016/j.lwt.2021.112924

38. Activated carbon-cement composite coated polyurethane foam as a cost-efficient solar steam generator

Author:
Sujith Lal; Sudip K. Batabyal
Source:
Journal of cleaner production 2022 pp. 134302
ISSN:
0959-6526
Subject:
absorbance; activated carbon; cement; composite materials; cost effectiveness; dyes; evaporation rate; foams; generators (equipment); heat; hydrophilicity; lighting; liquid-air interface; polyurethanes; solar radiation; solar still; spectral analysis; surface temperature; wastewater; water filters; water pollution; water supply; water treatment
Abstract:
... Solar thermal evaporation (STE) is a promising advanced technique to purify contaminated water under the influence of solar light. Naturally, cement has served as a binder in masonry-related applications and possesses light-absorbing properties. Herein, we fabricated a cost-effective high-durable cement/carbon/polyurethane foam (CCPF) composite material as a solar-driven evaporator. It provided an ...
DOI:
10.1016/j.jclepro.2022.134302

39. Acyltransferase Domain Swapping for the Production of Tenvermectin B Metabolites in Genetically Engineered Strain Streptomyces avermitilis HU02

Author:
Hui Zhang; Shaoyong Zhang; Ji Zhang; Huan Qi; Han Wang; Liqin Zhang; Jun Huang; Jidong Wang
Source:
Journal of agricultural and food chemistry 2022 v.70 no.38 pp. 11994-12003
ISSN:
1520-5118
Subject:
Bursaphelenchus xylophilus; Saccharopolyspora erythraea; Streptomyces avermitilis; Tetranychus cinnabarinus; avermectins; bioassays; electrospray ionization mass spectrometry; food chemistry; genes; genetically engineered microorganisms; insecticidal properties; metabolites; milbemycins; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... Tenvermectins A and B (TVMs A and B) are hybrid natural compounds of avermectins and milbemycins with enhanced insecticidal activity. Aiming at obtaining a strain for the production of the higher activity metabolite–TVM-B as a major constituent, a recombinant strain Streptomyces avermitilis HU02 was constructed by a domain swapping strategy in which milA1-AT0 gene in S. avermitilis MHJ1011 was rep ...
DOI:
10.1021/acs.jafc.2c04482

40. Adiponectin-Secretion-Promoting Cyclic Peptide–Polyketide Hybrids from a Halophyte-Associated Fungus, Colletotrichum gloeosporioides JS0417

Author:
Changyeol Lee; Junpyo Gong; Jaekyeong Kim; Hyejin Ko; Seungchan An; Sunghee Bang; Stephen T. Deyrup; Minsoo Noh; Sang Hee Shim
Source:
Journal of natural products 2022 v.85 no.3 pp. 501-510
ISSN:
1520-6025
Subject:
Glomerella cingulata; adiponectin; aspirin; bioactive properties; depsipeptides; fungi; indoles; isoleucine; moieties; polyketides; spectral analysis
Abstract:
... Three new cyclic peptide–polyketide hybrids (1–3) and two new chaetiacandin-type polyketides (4 and 5) along with nine known compounds were isolated from cultures of a halophyte-associated fungus, Colletotrichum gloeosporioides JS0417. Spectroscopic analysis revealed that 1–3 were cyclic depsipeptides where 3,5,11-trihydroxy-2,6-dimethyldodecanoic acid was linked to two amino acids through amide a ...
DOI:
10.1021/acs.jnatprod.1c01102

41. Adsorptive removal of Congo red from aqueous phase using graphene–tin oxide composite as a novel adsorbent

Author:
T. Mahmood; U. Noreen; R. Ali; A. Ullah; A. Naeem; M. Aslam
Source:
International journal of environmental science and technology 2022 v.19 no.10 pp. 10275-10290
ISSN:
1735-1472
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; absorption; adsorbents; adsorption; dyes; electron microscopy; endothermy; energy-dispersive X-ray analysis; graphene; graphene oxide; kinetics; oxygen; pH; sorption isotherms; spectral analysis; technology; temperature; thermodynamics; thermogravimetry; tin; tin dioxide; wastewater
Abstract:
... The main focus of this work was to prepare graphene tin oxide composite as a novel adsorbent for the removal of hazardous anionic dye, Congo Red, from aqueous systems. The composite was prepared by a simple solvothermal method. The adsorbent was characterized via scanning electron microscopic analysis, energy-dispersive spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy and t ...
DOI:
10.1007/s13762-021-03867-1

42. Adulteration Detection of Edible Bird’s Nests Using Rapid Spectroscopic Techniques Coupled with Multi-Class Discriminant Analysis

Author:
Jing Sheng Ng; Syahidah Akmal Muhammad; Chin Hong Yong; Ainolsyakira Mohd Rodhi; Baharudin Ibrahim; Mohd Noor Hidayat Adenan; Salmah Moosa; Zainon Othman; Nazaratul Ashifa Abdullah Salim; Zawiyah Sharif; Faridah Ismail; Simon D. Kelly; Andrew Cannavan
Source:
Foods 2022 v.11 no.16 pp. -
ISSN:
2304-8158
Subject:
adulterated products; agar; birds; chemometrics; collagen; discriminant analysis; market prices; spectral analysis; spectrometers; spectroscopy; traditional medicine; Malaysia
Abstract:
... Edible bird’s nests (EBNs) are vulnerable to adulteration due to their huge demand for traditional medicine and high market price. Presently, there are pressing needs to explore field-deployable rapid screening techniques to detect adulteration of EBNs. The objective of this study is to explore the feasibility of using a handheld near-infrared (VIS/SW-NIR) spectroscopic device for the determinatio ...
DOI:
10.3390/foods11162401

43. Aggregate size distribution of arid and semiarid laboratory soils (<2 mm) as predicted by VIS-NIR-SWIR spectroscopy

Author:
Eyal Ben Dor; Nicolas Francos; Yaron Ogen; Amos Banin
Source:
Geoderma 2022 v.416 pp. 115819
ISSN:
0016-7061
Subject:
clay; clay fraction; dust; iron oxides; organic matter; reflectance; remote sensing; smectite; soil aggregates; soil aggregation; soil structure; spectral analysis; Israel
Abstract:
... Soil aggregation is an important property, affecting issues such as soil structure and dust load. To investigate the potential to evaluate soil aggregation status via proximal sensing, we conducted a comprehensive study using the legacy soil spectral library (SSL) of Israel representing arid and semiarid environments. The SSL was segregated into six soil aggregate size fractions as follows: 2–1.4  ...
DOI:
10.1016/j.geoderma.2022.115819

44. Airborne imaging spectroscopy of igneous layered complex and their mapping using different spectral enhancement conjugated support vector machine models

Author:
Arindam Guha; Subhendu Mondal; Snehamoy Chatterjee; K. Vinod Kumar
Source:
Geocarto international 2022 v.37 no.2 pp. 349-365
ISSN:
1752-0762
Subject:
automation; models; spectral analysis; spectroscopy; support vector machines; variance; India
Abstract:
... We used Advanced Visible Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) hyperspectral data for deriving automated layered igneous intrusion maps by implementing the support vector machine (SVM) algorithm. We proposed a spectral analysis based approach to identify a set of optimum input spectral bands for deriving SVM-based maps of layered rocks of Sittampundi Layered Complex, India. We ...
DOI:
10.1080/10106049.2020.1734873

45. Alkaline hydrolysis and discrimination of propolis at different pH values using high throughput 2D IR spectroscopy and LC-MS/MS

Author:
Yee Ching Kung; Lee Suan Chua; Mun Fei Yam; John Soo
Source:
Bioresource technology reports 2022 v.18 pp. 101120
ISSN:
2589-014X
Subject:
alkaline hydrolysis; anthraquinones; antioxidant activity; byproducts; flavonoids; glycosides; industry; infrared spectroscopy; meliponiculture; pH; principal component analysis; procyanidins; propolis; resveratrol; spectral analysis; ultrasonic treatment; variance; xanthone
Abstract:
... Propolis has become a valuable byproduct of meliponiculture industry in recent years, due to its remarkable pharmacological importance. The propolis of Heterotrigina itama was extracted at pH 8–10 using ultrasonication. The results found that alkaline hydrolysis improved propolis quality, particularly at the mild alkaline condition. This was because higher amount of phenolics and flavonoids with h ...
DOI:
10.1016/j.biteb.2022.101120

46. Alkaloids from endophytic fungus Aspergillus fumigatus HQD24 isolated from the Chinese mangrove plant Rhizophora mucronata

Author:
Renjian Zou; Chengwen Wei; Xuexia Zhang; Dongdong Zhou; Jing Xu
Source:
Natural product research 2022 v.36 no.19 pp. 5069-5073
ISSN:
1478-6427
Subject:
Aspergillus fumigatus; Rhizophora mucronata; cytotoxicity; endophytes; flowers; fungi; immunosuppression; niacin; research; spectral analysis
Abstract:
... Chemical investigation of endophytic fungus Aspergillus fumigatus HQD24, isolated from the flower of Rhizophora mucronata led to the isolation of eight alkaloids, including pyripyropene A (1), 1,11-dideacetyl-pyripyropene A (2), pyripyropene E (3), chaetominine (4), tryptoquivaline J (5), fumitremorgin C (6), 1-acetyl-β-carboline (7), and nicotinic acid (8). Their structures were unambiguously elu ...
DOI:
10.1080/14786419.2021.1916017

47. Allelopathic Activity of a Novel Compound, 5,6-Dihydrogen-11α-O-acetyl-12β-O-tigloyl-17β-marsdenin, and a Known Steroidal Glycoside from the Leaves of Marsdenia tenacissima (Roxb.) Moon

Author:
Seinn Moh Moh; Arihiro Iwasaki; Kiyotake Suenaga; Hisashi Kato-Noguchi
Source:
Agronomy 2022 v.12 no.7 pp. -
ISSN:
2073-4395
Subject:
Lepidium sativum; Lolium multiflorum; Marsdenia tenacissima; agronomy; allelopathy; chromatography; glycosides; growth retardation; medicinal plants; methanol; seedlings; spectral analysis; weed control
Abstract:
... Medicinal plants are rich sources of bioactive substances that can be used to develop environmentally friendly weed control alternatives. Marsdenia tenacissima (Roxb.) Moon is a traditional medicinal plant well known for its pharmacological activities and several bioactive compounds. However, its allelopathy and related substances have not been reported. Hence, the present study was conducted to e ...
DOI:
10.3390/agronomy12071536

48. Alterations in calmodulin-cardiac ryanodine receptor molecular recognition in congenital arrhythmias

Author:
Giuditta Dal Cortivo; Carlo Giorgio Barracchia; Valerio Marino; Mariapina D’Onofrio; Daniele Dell’Orco
Source:
Cellular and molecular life sciences 2022 v.79 no.2 pp. 127
ISSN:
1420-682X
Subject:
arrhythmia; calcium; calmodulin; cardiomyocytes; dissociation; molecular dynamics; peptides; protein-protein interactions; ryanodine receptors; spectral analysis; thermodynamics
Abstract:
... Calmodulin (CaM), a ubiquitous and highly conserved Ca²⁺-sensor protein involved in the regulation of over 300 molecular targets, has been recently associated with severe forms of lethal arrhythmia. Here, we investigated how arrhythmia-associated mutations in CaM localized at the C-terminal lobe alter the molecular recognition with Ryanodine receptor 2 (RyR2), specifically expressed in cardiomyocy ...
DOI:
10.1007/s00018-022-04165-w

49. Amino ether analogues of 4,4′-dihydroxy-3-methoxy-6,7′-cyclolignan and their activity against drug-resistant bacteria

Author:
Guillermo Núñez-Mojica; Martha L. Hernández-Carrillo; Francisco G. Avalos-Alanís; Elvira Garza-González; Verónica M. Rivas-Galindo; David A. Silva-Mares; Marc-Antoine Bazin; Pascal Marchand; María del Rayo Camacho-Corona
Source:
Phytochemistry letters 2022 v.50 pp. 57-60
ISSN:
1874-3900
Subject:
Enterococcus faecium; Larrea tridentata; Mycobacterium tuberculosis; active ingredients; antibacterial properties; drug resistance; lignans; plant biochemistry; spectral analysis
Abstract:
... Larrea tridentata antibacterial lignan 4,4′-dihydroxy-3-methoxy-6,7′-cyclolignan (1) was derivatized to obtain eleven new amino ether derivatives (2 A-12 C). The structural elucidation of compounds was performed by analysis of 1D- and 2D NMR spectral data and HRESIMS. The antibacterial activity of compounds was determined against nine drug-resistant bacteria and two strains of Mycobacterium tuberc ...
DOI:
10.1016/j.phytol.2022.05.004

50. Aminoalkyl-organo-silane treated sand for the adsorptive removal of arsenic from the groundwater: Immobilizing the mobilized geogenic contaminants

Author:
Manish Kumar; Santanu Mukherjee; Alok Kumar Thakur; Nirav Raval; Alicia Kyoungjin An; Petros Gikas
Source:
Journal of hazardous materials 2022 v.425 pp. 127916
ISSN:
0304-3894
Subject:
adsorbents; adsorption; animals; arsenates; arsenic; groundwater; pollutants; quartz; sand; soil; spectral analysis; water pollution
Abstract:
... Arsenic (As), a geogenic legacy pollutant can be present in environmental matrices (water, soil, plants, or animal) in two redox states (As(III) or As(V)). In the present study, charged mono- and di-amino functionalized triethoxy and methoxyorganosilane (TT1 and TT2- 1% and 5%) were impregnated with quartz sand particles for the treatment of As polluted water. Spectroscopic characterization of org ...
DOI:
10.1016/j.jhazmat.2021.127916